Our Staff Directory

Teaching Staff

Welcome to our CGA School Staff Directory, where a diverse and dedicated team of educators and professionals from various islands come together to foster an enriching learning environment. Our staff members bring a wealth of knowledge, experiences, and cultural perspectives, creating a dynamic and inclusive atmosphere for students to thrive. With a commitment to excellence in education, each staff member at CGA contributes unique skills and passion to the collective mission of nurturing future leaders.
Title Name Qualifications
Director Eunyoung Lee  Ph.D.
Chaplain Toshiki Asai  
Principal Naomi Endah P.D. S. Th., M. Pd.
Vice Principal Mikha Bimantara Warsito M. Pd.
General Administration 1 Mutyara O. Simanullang A. Md
General Administration 2 Nining K. Elo Beili S. S
School Operator + Religious Teacher Stepanus Paulus Samosir S. Th.
Teacher_Grade 1 Gefbrilia Azaria Nimpa S. Pd.
Teacher_Grade 2 Difrin Siokain S. Pd.
Teacher_Grade 3 Rohdiana Uli Simarmata S. Pd.
Teacher_Grade 4 Fiola Anglina Wijono S. Pd.
Teacher_Garde 5 & 6 Hana Aprilia S. Pd.
Teacher_Math Yusiana Christiyan  S. Pd.
Teacher_Music Kevin William S. Sn.
Teacher_Religious The Thomas Mulia S. Th.
Teacher_PE Gans Heroson  S. Pd.
Teacher_Bahasa Sunda Sadi Susanto S. Pd
Teacher_English Johanna Maria Elizabeth Hartkoorn Native speaker
Dormitory Rie Otake  M. Div 
Title Name Qualifications
Director Eunyoung Lee Ph. D
Chaplain Toshiki Asai
Principal Naomi Endah P.D. S.Th., M.Pd.
Vice Principal Gustianty Milka Thana S. Pd.
General Administration 1 Mutyara O. Manullang A. Md.
General Administration 2 Nining K. Elo Beili S. S
School Operator + Religious Teacher Stepanus Paulus Samosir S. Pd.
Tecaher_Grade 7 The Thomas Mulia S. Th.
Teacher_Grade 8 Yusiana Christiyan S. Pd.
Teacher_Grade 9 Veli Haloho S. Pd.
Teacher_Bahasa Indonesia Noni Priscilia S. Pd.
Teacher_IT Silvia Theresia Sihombing S. Pd.
Teacher_Music Kevin William S. Sn.
Teacher_IPA Cindy Mariyana S. Pd.
Teacher_PE Gans Heroson S. Pd.
Teacher_Math Dionisius Diego S. Pd.
Teacher_Bahasa Sunda Sadi Susanto S. Pd.
Dormitory Rie Otake M. Div
Title Name Qualifications
Director Eunyoung Lee Ph.D
Chaplain Toshiki Asai
Principal Naomi Endah P.D. S.Th., M.Pd.
Vice Principal Kevin William S. Sn.
General Administration 1 Mutyara O. Manullang A. Md
General Administration 2 Nining K. Elo Beili S. S
School Operator + Religious Teacher Stepanus Paulus Samosir S. Pd.
Tecaher_Grade 10 Dosni Mawar Marbun S. Pd.
Tecaher_Grade 11 Silvia Theresia Sihombing S. Pd.
Tecaher_Grade 12 Cindy Mariyana S. Pd.
Teacher_English Farida S. Pd.
Teacher_Math Dionisius Diego S. Pd.
Teacher_Economics Veli Haloho S. Pd.
Teacher_Bahasa Indonesia Doranel Agates Kleunike S. Pd.
Teacher_Geography Agatha Christina P. S. Pd.
Teacher_Religious The Thomas Mulia S. Pd.
Teacher_PE Gans Heroson S. Pd.
Teacher_Bahasa Sunda Sadi Susanto S. Pd.
Dormitory Rie Otake M. Div

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